Hi Dan thanks for the vacum leak info...I did find a couple broken...a green one which I located and a yellow one which I cannot find where it is suppose to connect, is there any where to get a vacum hose diagram for a 92?

Thanks

L.A.

you said no vacuum leaks, how did you do it?

as already stated, common and easy problem is leaking vacuum line. did you inspect EVERY inch of all of them?

did you wiggle them while engine running to see if symptoms better/worse?

don't tear down anything big ( like intake manifild gasket)  until you are sure

One favorite of mine is a vacuum gauge - may show wrong reading if big enough vacuum leak, but you would need (1) gauge, (2) access port to intake manifold ( I am not sure about your model) and (3) the specs.

OK here goes, there is a vac line running from the bottom of the computer to the fire trap on the firewall then out of the fire trap to the rear of the intake manifold then out of the manifold up to the bottom of the air filter housing then across to the intake tube on the air filter housing. All these lines have elbows/fittings on the ends (8 total) and are prone to deteriation over the years especially the ones on the rear of the intake due to exhaust heat.

The fire trap i believe is a safety trap to prevent fumes etc igniting and returning to the computer in the event of a back fire etc, it is located on the bulkhead to the left of the air cleaner looking from the front.

Again. I'm no expert, but the computer senses several things, one of which is (may be) the vaccuum of the intake manifold, as part of its engine assessment. The sensor may be bolted to the intake somewhere and have wires, or it may be somewhere else, and conected by vaccuum lines. I hve read elsewhere here that fuel injected Minis suffer from the plastic fitting getting brittle and cracking, letting air into the intake and/or causing the computer to misred. Look for vaccuum lines and see where they go and what condition the connections are in.

Early Minis (MK1) had a metal vaccuum line running from the carb to the distributor which had a metal cannister mounted vertically near the thermostat housing - this was a fuel vapour trap to prevent fuel getting down to the distributor. A fuel injected Mini may have something similar.

Hi , I found this from another post ( It may be related to the alternator issue but you need to check the vacuum lines from the computer to the fire trap and then to the rear of the intake manifold. You will probably find that the "elbows" on the end of the vacuum line ar brittle and broken creating an air leak and causing the car to run lean and stall.)

I do not see any vacum lies from the computer? and what is the fire trap ?

Thanks

if there are no vacuum leaks i would then check the idle stepper motor! full open the throttle 5 times with the key at 'on' position (engine not running) then turn the engine on!

I'm no expert when it comes to fuel injected cars, but I had a similar problem mny ears ago with a Dodge Caravan. The trouble then was in the throttle body-stepper motor area. The computer is supposed to modulate the idle by controlling the stepper motor, but wear in the components allowed the throttle plate to close too far with the result the engine would shut down. I agree it is triccky to hold the throttle while applying the foot brake and depressing the clutch.

Hi I have a 92 mini LH from Italy it is single port FI , lately it has a problem cutting off at red lights etc, you always have to keep it running with your heel on the gas , I was told to check for vacum leaks but did not have any ? Can someone suggest any other things to look for or refrence a mini mechanic in the Atlanta area ?

Thanks

L.A. 404-808-6471